Composite of Si.sub.3 N.sub.4 by infiltration

Details Composite of Si.sub.3 N.sub.4 by infiltration Composite of Si.sub.3 N.sub.4 by infiltration

1985-06-03

1987-04-28

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501151, C04B 3558

Patent

active

046614613

ABSTRACT:
A composite is produced by infiltrating the open pores of a polycrystalline silicon nitride body with a member selected from the group consisting of barium fluoride, calcium fluoride, magnesium fluoride, strontium fluoride, cerium fluoride, dysprosium fluoride, gadolinium fluoride, lanthanum fluoride, samarium fluoride, yttrium fluoride, and a mixture of said fluoride with a metal oxide.

REFERENCES:
patent: 2618565 (1952-11-01), Nicholson
patent: 3031342 (1962-04-01), Kertesz et al.
patent: 4119475 (1978-10-01), Prochazkha et al.
patent: 4146379 (1979-03-01), Copley et al.
patent: 4240835 (1980-12-01), Laskow et al.
patent: 4457496 (1984-07-01), de Juaye et al.
patent: 4484972 (1984-11-01), Ebata et al.
Ceramics Bulletin, vol. 63, Dec. 1984, p. 1476.

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